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Frame Relay Questions

September 10th, 2015 in ROUTE 300-101 Go to comments

Question 1


Normal (Ethernet) ARP Request knows the Layer 3 address (IP) and requests for Layer 2 address (MAC). On the other hand, Frame Relay Inverse ARP knows the Layer 2 address (DLCI) and requests for Layer 3 address (IP) so we called it “Inverse”. For detail explanation about Inverse ARP Request please read our Frame Relay tutorial – Part 2.

Question 2


When saying “Frame Relay point-to-point” network, it means “Frame Relay subinterfaces” run “point-to-point”. Notice that Frame Relay subinterfaces can run in two modes:
+ Point-to-Point: When a Frame Relay point-to-point subinterface is configured, the subinterface emulates a point-to-point network and OSPF treats it as a point-to-point network type
+ Multipoint: When a Frame Relay multipoint subinterface is configured, OSPF treats this subinterface as an NBMA network type.

And there are 4 network types which can be configured with OSPF. The hello & dead intervals of these types are listed below:

Network Type Hello Interval (secs) Dead Interval (secs)
Point-to-Point 10 40
Point-to-Multipoint 30 120
Broadcast 10 40
Non-Broadcast 30 120

Therefore the default OSPF hello interval on a Frame Relay point-to-point network is 10 seconds.

Reference: http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13693-22.html

Question 3


Traffic shaping should be used when:
+ Hub site (headquarter) has much faster speed link than the spokes (remote sites). In this case we need to rate-limit the hub site so that it does not exceed the remote side access rate
+ Hub site has the same speed link as the spokes. For example both the headquarter and the spokes use T1 links. In this case, we need to rate-limit the remote sites so as to not overrun the hub.

An example of configuring traffic shaping is shown below:

interface Serial0/1
encapsulation frame-relay
frame-relay traffic-shaping
interface Serial0/1.10 point-to-point
ip address
frame-relay interface-dlci 10 class my_traffic_shaping
map-class frame-relay my_traffic_shaping
frame-relay adaptive-shaping becn //Configure the router to respond to frame relay frames that have the BECN bit set
frame-relay cir 128000 //Specify the committed information rate (CIR) for a Frame Relay virtual circuit
frame-relay bc 8000 //Specify the committed burst size (Bc) for a Frame Relay virtual circuit.
frame-relay be 8000 // Specify the excess burst size (Be) for a Frame Relay virtual circuit.
frame-relay mincir 64000 // Specify minimum acceptable CIR for a Frame Relay virtual circuit.

Reference: http://www.cisco.com/c/en/us/support/docs/wan/frame-relay/6151-traffic-shaping-6151.html

Question 4

  1. Devastated
    October 4th, 2016

    I took the ‘300-101: Implementing Cisco IP Routing’ exam today and failed with a 640. Not even 10 of the 49 total questions were from this site. What happened???

  2. tagwa ali
    October 10th, 2016

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  3. Ouch tha thurt
    October 23rd, 2016

    Tagwa … 183q is not entirely accurate either, as I just sat exam using 149q. I looked through 183q and it’s missing stuff that I saw: CHAP drag and drop, default administrative distance of ebgp (20), etc. Anybody know where latest version is for past Oct 2016?

  4. Sky_touch
    October 23rd, 2016


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    October 23rd, 2016

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  6. richy
    November 2nd, 2016

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    November 2nd, 2016

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  8. Peter
    December 8th, 2016

    Does anyone know the answer to the split horizon frame relay question?
    There’s two correct answers.

  9. Jane woken
    February 2nd, 2017

    can somebody tell me please that what is the last question of 40Q of TAGWA , in my life there is no answer of question “Meaning of priority 0 configured in ospf router?” . Plus what it the correct answer for the following questions?
    Question 2
    Refer to the following configuration command.
    router(config)# ip nat inside source static tcp 8080 80
    Which statement about the command is true?
    A. Any packet that is received in the inside interface with a source IP port address of is translated to
    B. Any packet that is received in the inside interface with a source IP port address of is translated to
    C. The router accepts only a TCP connection from port 8080 and port 80 on IP address
    D. Any packet that is received in the inside interface with a source IP address of
    is redirected to port 8080 or port 80.


    Question 28
    A network engineer wants to ensure an optimal end-to-end delay bandwidth product. The delay is
    less than 64 KB. Which TCP feature ensures steady state throughput?
    A. Window scaling
    B. Network buffers
    C. Round-trip timers
    D. TCP acknowledgments

    some people said the answer is wrong of TAGWA file. Please help

  10. mystry
    February 3rd, 2017

    Meaning 0 priority: That router can’t become DR or BDR

    Q2: Answer is B

    28. A

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    July 9th, 2017

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    July 9th, 2017

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  13. took test today
    July 15th, 2017

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  14. Dash
    July 19th, 2017

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